trig
posted by stacey graham .
sec^2x/tanx (tanx)
how to simplify

trig 
Reiny
sec^2x/tanx (tanx)
= (1/cos^2x)(cosx/sinx)  sinx/cosx
= 1/(sinxcosx)  sinx/cosx
= (1  sin^2x)/(sinxcosx)
= cos^2x / (sinxcosx)
= cosx/sinx
= cot x
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